Cơ sở của sinh sản vô tính ở động vật là quá trình gì?
Hãy suy nghĩ và trả lời câu hỏi trước khi xem đáp án
Sinh sản vô tính ở động vật là sự sinh sản mà các cơ thể con sinh ra từ một phần của cơ thể mẹ, cơ sở của sinh sản vô tính ở động vật là quá trình nguyên phân, cơ thể con giống nhau và giống mẹ.
Đáp án A
Bộ Đề Kiểm Tra Học Kì II - Năm Học 2023-2024 - Sinh Học 11 - Các Trường THPT Trên Toàn Quốc không chỉ giúp học sinh củng cố kiến thức đã học mà còn rèn luyện khả năng tư duy logic và giải quyết vấn đề nhanh chóng, chính xác. Đề thi bao gồm các dạng bài tập đa dạng để các em chuẩn bị tốt cho kỳ thi khác.
Câu hỏi liên quan
"Nếu Tổ quốc neo mình đầu sóng cả
Những chàng trai ra đảo đã quên mình
Một sắc chỉ về Hoàng Sa thuở trước
Còn truyền đời con cháu mãi đinh ninh
Nếu Tổ quốc nhìn từ bao mất mát
Máu xương kia dằng dặc suốt ngàn đời
Hồn dân tộc ngàn năm không chịu khuất
Dáng con tàu vẫn hướng mãi ra khơi"
(Trích Tổ quốc nhìn từ biển - Nguyễn Việt Chiến)
Đoạn trích mang đến cho người đọc nhận thức gì về Tổ quốc xưa và nay?
Bản vẽ kĩ thuật thi công:
Hoạt động của nền kinh tế có trò kết nối sản xuất với tiêu dùng?
Theo em, những vấn đề về thu nhập, chi tiêu, tiết kiệm,... của mỗi người được gọi là gì?
Cho biết: Động cơ điện xoay chiều một pha được sử dụng trong lĩnh vực nào?
Giá điện được thay đổi từ ngày 04/5/2023 đến trước ngày 9/11/2023 đã quy định rõ về giá bán lẻ điện cho các đơn vị bán lẻ điện đối với nhóm khách hàng sử dụng điện sinh hoạt gồm 6 bậc như sau:
Một bạn sinh viên thuê trọ thì lúc kí hợp đồng, bác chủ trọ thông báo giá tiền điện sẽ là 2500đ/kWh. Nếu bác chủ trọ phải trả tiền điện theo giá sinh hoạt và tháng 9 bạn sinh viên dùng hết 110 số điện. Bác chủ trọ lời bao nhiêu tiền điện? (biết rằng bác cần trả thêm 8% thuế GTGT tiền điện).
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 40.
Parents of a Tokyo elementary school are up in arms at being asked to pay 730 dollars for their child's school uniform. A public elementary school in Tokyo's upmarket Ginza district has decided to adopt new school uniforms designed by the luxury Italian designer Armani. The bespoke uniforms, which include a hat and bag, are priced at over 80,000 (730 dollars) each. Parents are angry at the school's decision and are protesting at what they view as the exorbitant price for a uniform of an eight-year-old child. The school said it wanted a designer uniform that represented the rich area of Ginza. School officials visited top department stores and decided to ask the fashion brand Armani to design the uniform.
The expensive uniform has created such a fuss that it has been discussed in Japan's parliament. One lawmaker said that since the school is public and not private, "a certain price range needs to be considered". Finance Minister Taro Aso said. "Clearly it's expensive. It would be tough if a student could not afford to pay for it." Japan's education minister said steps would be taken to ensure the financial burden placed on parents for uniforms, "would not be excessive". Twitter users said young children are not interested in designer clothes. The school principal said. "With humility, I take the criticism that the explanation has been insufficient and not well-timed. I will go on explaining carefully to those concerned."
What does the passage mainly discuss?
Cho tứ diện SABC. Trên các cạnh SA, SB và SC lấy các điểm D, E và F sao cho DE cắt AB tại I, EF cắt BC tại J, FD cắt AC tại K. Chọn khẳng định sai?
Vitamin C (ascorbic acid) chứa \(40,92 \% \mathrm{C}, 4,58 \% \mathrm{H}\) và \(54,50 \% \mathrm{O}\) về khối lượng. Công thức thực nghiệm của ascorbic acid là:
Xác định ý đúng: Khái niệm phân bón hóa học là?
Read the following passage about endangered languages and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questionsfrom 31 to 40.
[I] Social media has become a dominant force in modern communication, offering a range of benefits and challenges. [II] It has revolutionized the way people interact, share information, and even form relationships. [III] While these platforms offer opportunities for connection and expression, they also have their drawbacks. [IV] For instance, excessive use of social media has been linked to a range of negative effects, including mental health issues, social isolation, and decreased productivity. [V] However, when used responsibly, social media can also offer a variety of positive outcomes, such as the ability to stay connected with loved ones, network professionally, and access valuable information and resources.
One of the major benefits of social media is its ability to keep people connected. For example, individuals who live far apart can maintain close relationships through regular communication on these platforms. Social media also facilitates professional networking, allowing users to connect with potential employers or clients, and enabling companies to promote their products and services to a global audience. Additionally, platforms like Facebook, Twitter, and Instagram provide a space for people to share ideas, opinions, and creative work, fostering a sense of community and collaboration.
Despite these advantages, there are serious concerns about the negative impact of social media, particularly on mental health. Studies have shown that excessive social media use can contribute to feelings of anxiety, depression, and loneliness. This is often attributed to the unrealistic portrayals of life that are commonly shared on these platforms, leading to comparisons that can make individuals feel inadequate or left out. Furthermore, constant exposure to negative news or online bullying can exacerbate these feelings and contribute to long-term psychological stress.
Another issue with social media is its potential to distract people from their daily responsibilities. With notifications constantly popping up and endless streams of content to scroll through, individuals may find it difficult to focus on tasks such as work, school, or personal obligations. This can result in decreased productivity and a lack of attention to important matters.
Ultimately, the impact of social media depends on how it is used. If individuals are mindful of their usage patterns and take steps to limit their time on these platforms, they can enjoy the benefits of staying connected and informed without the negative consequences. Parents, educators, and mental health professionals can also play a role in helping young people develop healthy habits and manage their social media use effectively.
Where in paragraph 1 does the following sentence best fit?
"Social media has transformed how individuals communicate and engage with each other."
Chu kì của dao động điều hòa là
Read the following passage about lifelong learning and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.
My father was an enthusiastic traveller, but as he got older, he increasingly suffered from what he called “travel fever,” a vivid term for the acute anxiety felt before a journey, essentially due to uncertainty about all the things that could go wrong. Sadly, this eventually stopped him from going on holiday. Then I, too, started to suffer similar apprehension, so I consulted a psychotherapist. She recommended a small piece of cognitive behavioural therapy, which involved acknowledging the mental and physical symptoms of anxiety, but telling myself that these were essentially indistinguishable from feelings of excitement about the prospect of a journey. This reframing of my feelings has been reasonably effective – it’s one way of dealing with uncertainty.
It’s not just the uncertainty of travel that we all have to face. None of us knows what is going to happen, or what is currently going on outside our immediate knowledge, or the vast majority of what has happened in the past. Uncertainty has been called the “conscious awareness of ignorance,” and there is a lot we are ignorant about. We must navigate through life without complete information, and this fundamental uncertainty is an inescapable aspect of human existence.
We all have to live with this uncertainty and, as a statistician, it’s been my job to try to analyse data and assess some of the risks we face. (I)But some deal with uncertainty with more equanimity than others. (II) Psychological studies, as well as our own experience, reveal a wide variation in people’s responses, including those that are cognitive (how we think), emotional (how we feel), and behavioural (what we do). (III)For example, when faced with uncertainty, do you deny it or acknowledge it, does it put the wind up you or make you courageous, do you try to avoid it or approach it?(IV)
Of course, your response may depend on the context, just as an individual’s appetite for risk-taking can vary across different areas of their lives. I have known people who seemed to take huge physical risks, yet were very cautious with money. Numerous scales have been developed to measure how well people can deal with uncertainty, based on responses to statements ranging from “Unforeseen events upset me greatly” to “When it’s time to act, uncertainty paralyses me.” Those who score highly, and find it difficult to tolerate uncertainty, may also be at increased risk of clinically significant anxiety and depression.
Which of the following best summarizes paragraph 4?
Cơ chế của thị trường có các ưu điểm gì?
Mark the letter A, B, C or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questions from 13 to 17. (1,25 point)
a. A further cause is a lack of affordable housing. Many poor or low-income people can’t afford a place to live because the houses are so expensive.
b. What are the causes and what can we do to solve the problem?
c. As a result, they can’t have somewhere to live or end up staying on streets and become homeless.
d. One of the main causes is a lack of support network. Many people don’t have friends or family to help them in hard times with a small loan for example, and they can become homeless.
e. These days, homelessness is real issue in society. There are many people who have to live on the streets because they have nowhere to go.
Phan Bội Châu và các đồng chí của ông chủ trương thành lập Hội Duy tân nhằm mục đích gì?
Khi sản phẩm chuyển hoá được tạo ra đủ với nhu cầu của tế bào, cơ chế nào sau đây được diễn ra để điều hoà quá trình chuyển hoá vật chất?
Linh kiện tích cực là:
CHỦ ĐỀ: GIẢI NOBEL HÓA HỌC 2020
(Tham khảo bài văn của chủ đề trong đường link dưới đây ở trang 21)
https://tvsthpt.dlib.vn/app/doc-sach-ebook/d00ddd794efd
Và trả lời câu hỏi sau:
Theo đoạn [9], công cụ CRISPR/Cas9 có thể chỉnh sửa hoặc ức chế gen đột biến của bệnh nhân nhiễm virus.
Đúng hay sai?
CHỦ ĐỀ 7
(Tham khảo bài văn của chủ đề trong đường link dưới đây ở trang 56)
https://tvsthpt.dlib.vn/app/doc-sach-ebook/d0a01a0e4114
Và trả lời câu hỏi sau:
Màng trong của ti thể không có cấu trúc nào sau đây?